1 files changed, 38 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/extras/dec/color_description_test.cc b/third_party/jpeg-xl/lib/extras/dec/color_description_test.cc
new file mode 100644
index 0000000000..a1c04a94e4
--- /dev/null
+++ b/third_party/jpeg-xl/lib/extras/dec/color_description_test.cc
@@ -0,0 +1,38 @@
+// Copyright (c) the JPEG XL Project Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "lib/extras/dec/color_description.h"
+
+#include "lib/jxl/color_encoding_internal.h"
+#include "lib/jxl/test_utils.h"
+#include "lib/jxl/testing.h"
+
+namespace jxl {
+
+// Verify ParseDescription(Description) yields the same ColorEncoding
+TEST(ColorDescriptionTest, RoundTripAll) {
+  for (const auto& cdesc : test::AllEncodings()) {
+    const ColorEncoding c_original = test::ColorEncodingFromDescriptor(cdesc);
+    const std::string description = Description(c_original);
+    printf("%s\n", description.c_str());
+
+    JxlColorEncoding c_external = {};
+    EXPECT_TRUE(ParseDescription(description, &c_external));
+    ColorEncoding c_internal;
+    EXPECT_TRUE(
+        ConvertExternalToInternalColorEncoding(c_external, &c_internal));
+    EXPECT_TRUE(c_original.SameColorEncoding(c_internal))
+        << "Where c_original=" << c_original
+        << " and c_internal=" << c_internal;
+  }
+}
+
+TEST(ColorDescriptionTest, NanGamma) {
+  const std::string description = "Gra_2_Per_gnan";
+  JxlColorEncoding c;
+  EXPECT_FALSE(ParseDescription(description, &c));
+}
+
+}  // namespace jxl